Fluke 789 top cover replacement - cant work out how to remove rotary switch

[instronumber1]

Hello to all and hapy new year,

I'm in the process of replacing the top cover on my Fluke 789 process meter, I'm having a bit of trouble trying to work out how to remove the rotary switch assembly.

I cant see anything obvious, and I'm reluctant to force it apart due to how expensive the parts are.

I'm hoping that someone here has done this before and can provide me with some insight.

I've attached a photo of my meter internals for reference.

Thanks in advance for your time.

[coromonadalix]

you should push the white hexagonal figure, its a shaft who insert in the rotating dial / contacts   be careful not to loose them and deform them

see

https://www.sistest.com.br/loja/?product=fluke-187-189-87-iv-89-iv-knob-botao-externo


not sur if the size is the same as 1/4   hex stud drill bit  ??    or better use some allen key ??

[instronumber1]

Thank you very much for the information, I shall try that and report back